Crankshaft-free cam planetary transmission combustion engine

Abstract

The invention discloses a crankshaft-free cam planetary transmission combustion engine, relating to the field of gas power and belonging to a multi-cylinder internal combustion engine. In the novel combustion engine, eight cylinders are evenly distributed around a cam sun wheel in a ring-shaped symmetrical way to lead the resultant force of the cam sun wheel to be zero, cylinder pistons act on the cam sun wheel through a push rod directly, the power is transmitted to an output shaft through planetary transmission by the cam sun wheel for outputting, and a sun wheel or a tie bar can be used as an outputting piece. The combustion engine saves a connecting rod and a crankshaft in the traditional combustion engine, each cylinder completes two work cycles each circle of the cam sun wheel; the rotation speed of the output shaft depends on the transmission ratio of the planetary transmission, when the sun wheel is fixed, the tie bar outputs with low speed and large torque, and can be widely applied to the fields such as engineering machinery; when the tie bar is fixed, the sun wheel outputs with high speed, and can be used as the power source of small generators and the like, and higher rotation speed can reduce the emission of harmful gas. The combustion engine has variable speed, simple and compact structure, small axial dimension, large power and stable operation.

Description

technical field [0001] The invention relates to the field of gas power, more specifically, a crankshaftless cam planetary transmission type internal combustion engine. Background technique [0002] At present, the common internal combustion engines are mostly four-stroke crankshaft connecting rod internal combustion engines. The transmission structure of this internal combustion engine all adopts a crank connecting rod mechanism, and the crankshaft is driven by the connecting rod, thereby converting the linear motion of the piston into the rotary motion of the crankshaft. Because this internal combustion engine presses and drives the crankshaft to rotate by the linear motion of the piston and the planar motion of the connecting rod, there is greater friction between the kinematic pairs, resulting in low transmission efficiency of the internal combustion engine. The crankshaft connecting rod type internal combustion engine also has the following major disadvantages: large vol...

AI Technical Summary

Problems solved by technology

Since this kind of internal combustion engine relies on the linear motion of the piston and the planar motion of the connecting rod to press and drive the crankshaft to rotate, there is a large friction between the kinematic pairs, resulting in low transmission efficiency of the internal combustion engine.

The crankshaft connecting rod type internal combustion engine also has the following main disadvantages: large volume; large unbalanced centrifugal force on the connecting rod and crankshaft; large impact and large vibration; and thus cause large mechanical wear, shortening the life of the internal combustion engine; complex structure, Processing, manufacturing, assembly, etc. are more difficult

[0003] In addition, the general internal combustion engine and the speed change device are two independent machines. Usually, the internal combustion engine needs to install an additional reducer for subsequent speed change, resulting in a bulky

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